OXALATE ELECTROLYTE FOR COPPER-TIN ALLOY DEPOSITION Russian patent published in 2017 - IPC C25D3/58 

FIELD: chemistry.

SUBSTANCE: electrolyte comprises, mol/l: copper sulfate pentahydrate (8-10)10^-2, tin sulfate (1-5)10^-2, ammonium oxalate (3-4)10^-1, sodium acetate (1.81-2.00)10^-1, Gelatin (1-5)10^-6, vanillin (1-5)10^-3 in the presence of (5-100)10^-5 of environmentally friendly ethylene diamine disuccinic acid chelating agent.

EFFECT: exclusion of environmental pollution, provision of a uniform delivery of the deposited copper and tin during electrolysis from the corresponding stable copper and tin complexes with ethylene diamine disuccinic acid to provide brilliant mirror-quality coatings firmly adhered to the substrate.

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